Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 24 )

2018 ( 114 )

2017 ( 86 )

2016 ( 96 )

Custom range...

Search Results: 1 - 10 of 6422 matches for " Md. Azharul Islam "
All listed articles are free for downloading (OA Articles)
Page 1 /6422
Display every page Item
Application of GIS in General Soil Mapping of Bangladesh  [PDF]
Md. Azharul Islam, Md. Amit Hasan, Murad Ahmed Farukh
Journal of Geographic Information System (JGIS) , 2017, DOI: 10.4236/jgis.2017.95038
Abstract: Bangladesh is a densely populated country where food crisis is one of the major issues where proper soil mapping is lacking till now. The purpose of this study is to prepare soil mapping of Bangladesh including different soil factors like pH, salinity, nutrients, texture, porosity, toxicity etc., along with general soil types and land availability through application of Geographical Information System (GIS). Q-GIS software and secondary data are used in this study. In present study, it was found that 12 types of soil texture were present in all around of Bangladesh and the maximum percentage of soil porosity values varied from 20% to 70%. A medium range of soil organic matter and strongly acidic soil was found all around the Bangladesh. It was found that the southern part of Bangladesh had slightly saline to highly saline soil. The major part of Bangladesh had medium high land which is very much preferable to agriculture. In Bangladesh, three categories of land such as highland, medium highland and low land cover 29%, 35% and 21% of total land, respectively. Agriculture land covers 9.5 million hectares in Bangladesh. The shifting rate based on agricultural use had been reported to be about 1% per year. At present, the amount of forest land covers 9.84% of total land of our country but 1976 it was 12.11%. Mangrove is now at 4.07% of total land mass of our country. In generally, 20 types of soils were found all around the country. Mapping of soil types described these 20 general soil types under 5 main categories and these are calcareous soil, non-calcareous soil, terrace soil, gray soil, peat and hill soils. This study will be helpful for the cultivator to cultivate appropriate crops in appropriate places after exploration at a glance.
Md. Azharul Islam
Academic Research International , 2012,
Abstract: case study was carried out to insure the performance and achievement of the goal of `Foundation Training program for University Teachers`. A number of 70 trainees were selected randomly out of 150 trained teachers of different national universities in Bangladesh. Data were collected during June 2010 -January 2011 through questionnaire and personal interview. Findings suggest that benefit index of the training ranged from 75 to 81, and it was highest for cognitive and lowest for psychomotor behavior. Not all teachers got the opportunity of applying the learning experience in each of the tasks of their job; the percentage ranged from 26 to 75, the lowest was for ‘assessment ofstudents and the highest was for ‘teaching and research works’. The level of benefit and extent of application of the learning from the training was associated to each other. However, the extent ofbenefit and extent of application was independent of teachers’ level of job; i.e. the training was found beneficial and applicable irrespective of job-level of the participants. Findings from this study reveal the overall impact of the training was very high for all trained teachers, improve the efforts to further develop on decision-making and action within the universities.
Md. Azharul Islam
Academic Research International , 2012,
Abstract: The study was attempted to explore the major factors influencing the extent of practice of pheromone technologies by the Bangladeshi farmers. The empirical data for the study were collected from the farmers of the selected villages of Nilphamari district in Bangladesh. About 70 farmers were selected randomly from 7 villages to collect the assigned data. Interview schedule and previously prepared questionnaire used to gather raw data followed by statistical analysis. The results of the study identified the following factors like lack of knowledge and awareness regarding pheromone, availability of proper pheromone, unscientific use of pesticide; as the major influential factors which can increase the extent of practice of pheromone technologies by the farmers. About 14% of the respondents possessed high level of knowledge in pheromone techniques followed by moderate level knowledge 45 % and 41% possessed low level ofknowledge. Taking these findings into account the policy makers can formulate a strategy to increase the extent of practice of pheromone by the farmers for the successful agricultural production in Bangladesh.
Pheromone use for insect control: present status and prospect in Bangladesh
Md. Azharul Islam
International Journal of Agricultural Research, Innovation and Technology : IJARIT , 2012,
Abstract: The insect’s world is filled with many odors. Insects use these odors to cue them in a variety of complex social behaviors, including courtship, mating, and egg laying. Scientists and pest control specialists have known about these complex communication systems for decades. The main aim of this study was to visualize the availability, trends and differences in the sources of pheromone control in agricultural growth of Bangladesh. It also concerned on constrains and present use of pheromone and their possible recommendation on behalf of Bangladesh agriculture. It concentrated on the data during last three decades (1980-2010), comprising status of pheromone use in Bangladesh agriculture and its future. Review revealed that Bangladesh has been enormously successful in increasing pheromone use in agricultural production (especially for vegetables). Understanding of the nature of pheromones and their potential for pest control along with the future prospective of pheromone technique in agriculture were stated. Since the pheromone, technologies for control of major crop pests in Bangladesh are still limited. So that this review emphasized on more attention to the authority to increase the research works and project facilities related to develop and promote pheromone techniques. It is highly recommended to increase availability of pheromone in market, more investment in research and development, introduction of newly identified pheromone for specific pest, to assist government and non-government organizations to work with farmers to reduce harmful insecticide use and promote pheromone tactics as one part of integrated crop management (ICM).
Post Evaluation: Training of Livestock Officers in Bangladesh
Md. Azharul ISLAM
Journal of Knowledge Management, Economics and Information Technology , 2011,
Abstract: The survey reported the level of usage of short term training program on ‘computer basics and database application’ for Upazila Livestock Officer(ULO) in Bangladesh. A number of 40 individuals were selected randomly out of 175 trained officers. Data were collected during December 2010 – April 2011 through questionnaire and personal interview. Specifically information on usage of computer, personal skill ratings, and constraint faced by respondents in the usage of ICT equipment were gathered. The training was found beneficial and applicable irrespective of job-level of the participants. Findingsrevealed that a majority of the respondents (95%) perceived themselves as in using personal computer for their official works. The study concludes that the overall impact of the training was very high for all trainees, irrespective of their age and service experience. It should be posited that government at various levels should assist in training of officers on digital compatibility.
Heavy Minerals in Sands along Brahmaputra (Jamuna) River of Bangladesh  [PDF]
Md. Ibrahim Khalil, Md. Nazrul Islam Khan, Md. Zafrul Kabir, Ratan Kumar Majumder, Md. Idris Ali, Debasish Paul, Syed Mohammad Azharul Islam
International Journal of Geosciences (IJG) , 2016, DOI: 10.4236/ijg.2016.71005
Abstract: Sands along Brahmaputra River of Bangladesh have long been considered to be a source of heavy minerals (HMs) since it traversed a long way through various terrains. An attempt has been made under this research work to determine the kinds and amounts of heavy minerals in the sands sourced from the river system. Samples from 14 locations along Brahmaputra River covering 30 km distance from upstream to downstream of the river are found to contain different heavy minerals concentration with a range of 7.92 - 25.16 weight% with the remaining of the sample comprising silicate and aluminosilicates. Mineral characterization from peak positions in diffractogram of X-ray Diffraction (XRD) evaluate quartz, feldspar and mica are major categories light mineral while rutile, magnetite, illmenite, zircon, monazite, garnet, uranium arsenide and uranium fluoride are the major types heavy minerals. Ilmenite and rutile are main contributors of total heavy mineral (THM). Titanium bearing minerals ilmenite and rutile contributes 26.22% - 31.01% and 14.57% - 23.50% of THM. In the present study area, most of the sands are found to be fine and medium grained as obtained from the particle sizes analysis using 18- to 230-mesh.
Study of Environmental Radiation on Sand and Soil Samples from Kuakata Sea Beach of Patuakhali  [PDF]
Khondaker Mohammed Nazrul Islam, Debasish Paul, Md. Mahbubur Rahman Bhuiyan, Amina Akter, Budrun Neher, Sheikh Mohammad Azharul Islam
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.39126
Abstract: The activity concentrations of radionuclides in the sand and soil samples collected from Kuakata seabeach of Patuakhali district in Bangladesh have measured using a high resolution high purity germanium (HPGe) detector of relative efficiency 40%. The activity concentrations of 226Ra, 232Th and 40K were found in the sand samples of Kuakata seabeach varied from 2.82 ± 4.89 to 87.96 ± 4.45 Bq.Kg–1, 21.72 ± 16.27 to 290.93 ± 18.15 Bq.Kg–1 and 26.24 ± 0.35 to 852.05 ± 142.15 Bq.Kg–1 respectively. For soil samples the activity concentrations of corresponding radionuclides were found to be 20.98 ± 3.96 to 42.92 ± 4.76 Bq.Kg–1, 59.25 ± 15.62 to 144.34 ± 18.52 Bq.Kg–1 and 570.43 ± 100.3 to 1165 ± 166.27 Bq.Kg–1 respectively. The average absorbed dose rate due to radionuclides in sand was estimated to range from 51.84 to 246.55 nGy.h–1 with an average of 98.33 nGy.h–1. Also the average absorbed dose rate due to radionuclides in soil was estimated to range from 76.63 nGy.h–1 to 142.36 nGy.h–1 with an average of 110.04 nGy.h–1. Radium equivalent activities were calculated for the analyzed samples to assess the radiation hazards arising due to the presence of this radionuclide in the samples. Most of the calculated radium equivalent activities are lower than the limit set in the OECD report (370 Bq.kg–1). The measured representative level index values for the investigated samples varied in the range 0.8 to 3.75.
Effects of Low Temperature in Reactivated Cambial Cells Induced by Localized Heating During Winter Dormancy in Conifers
Shahanara Begum,Satoshi Nakaba,Md. Azharul Islam,Yusuke Yamagishi
American Journal of Plant Physiology , 2012,
Abstract: Effects of low temperature on cambial cells induced by localized heating in Cryptomeria japonica and Abies firma were investigated during winter dormancy in January-February. Localized heating induced cambial reactivation in the stems earlier than natural cambial reactivation. In heated Cryptomeria japonica and Abies firma stems, cambial reactivation occurred after 6 and 2 days of heating, on 14 January 2007 and 15 January 2010, respectively. We stopped the electric heating system just after cambial reactivation in stems. When we stopped the heating system, the minimum atmospheric temperature was about 0C. After cambial reactivation, due to rapid decrease in temperature, cell contents of cambium became coagulated but nucleus was present in ray cambial cells. After one month, the shrunk cambium produced new deformed tracheids with abnormal cell shape. The results suggest that rapid decrease in temperature just after cambial reactivation might induce temporary damage of cambium that produces deformed tracheids indicating that cambium and its derivatives can response directly to changes in temperature which provides a useful experimental model system for studies of cambial biology and xylogenesis.
natomy of the Rachis of the Inflorescence of Pigeonpea (Cajanus cajan)
Shahanara Begum,Md. Azharul Islam,A.K.M. Azad-ud-doula Prodhan
International Journal of Botany , 2007,
Abstract: The anatomical investigation of the rachis has been made on the basis of flower removal. Two different types of rachis have been investigated. One type of rachis is normal (control) which develops naturally up to maturity and another type is deflowered (treated) where flowers and buds have been removed from the basal 3 nodes and then allows the rachis to develop naturally up to maturity. After removal of flowers and buds, pods are found to be set in 4-6 nodes of the same rachis. The internal structure of rachis is more or less similar to that of the stem. Epidermis bears multicellular hairs and glandular trichomes. The vascular tissue decreases gradually from base upward. The vascular tissue become highly developed in the deflowered rachis. The cambium is highly active on its adaxial side and produces a large amount of secondary xylem adaxially and well developed sieve tube elements abaxially. Some large vessels are formed in the abaxial region of the xylem. In the middle and upper parts of the deflowered rachis, the radial dimension of xylem is several times higher than the corresponding part of the normal rachis. The vascular tissue is poorly developed in the apical part of the normal rachis. The xylem is mainly composed of fibre cells with ray parenchyma which is uniseriate or multiseriate. Pericycle is discontinuous at the basal part and gradually it forms a more or less continuous ring towards the apical part around the vascular cylinder. Tanniniferous cells are more in the normal rachis compared to that of the deflowered rachis.
Anatomy of the Stem of Pigeonpea (Cajanus cajan)
Shahanara Begum,Md. Azharul Islam,A.K.M. Azad-ud-doula Prodhan
Asian Journal of Plant Sciences , 2007,
Abstract: Anatomical investigation has been made on the stem of pigeonpea (Cajanas cajan (L.) Millsp.) at different stages of growth following the standard paraffin method of microtechnique. The vascular bundle of the stem are collateral and arranged in a ring. The cambium initiates in the primary vascular bundle between xylem and phloem at the basal part of the stem of 3 days old plant. After the formation of fascicular cambium it gives rise to secondary xylem adaxially and secondary phloem abaxially. Most of the vessel members are solitary and few are paired while others are multiple. The solitary vessel members are more in mature stem as compared to that of the younger stem. The well developed periderm was found in mature stem. The pith resembles a typical dicotyledonous stem.
Page 1 /6422
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.